Fritz mink



No Model.)

F. MINK.

WATCH BOW FASTENER.

No. 472,764. Patented Apr. 12, 1892.

UNTTED STATES PATENT OFFICE.

FRITZ MINK, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR TO THE KEYSTONE \VATCII CASE COMPANY, OF SAME PLACE.

WATCH-BOW FASTEN ER.

SPECIFICATION forming part of Letters Patent N0. 472,764, dated April 12, 1892.

Application filed August 8, 1891. Serial No. 402,090- (No model.)

To all whom it may concern:

Be it known that I, FRITZ MINK, of the city and county ofPhiladelphia, and State ofPennsylvania, have invented an Improvement in IVatch-Bow Fasteners, of which the following is a specification.

My invention relates to watch'bow fasteners; and it consists of certain improvements, which are fully set forth in the following specification, and are shown in the accompanying drawings, which form a part thereof.

It is the object of my invention to provide for a watch-case a convenient, efficient, and economical device for fastening the watchcase bow to the pendant, while permitting it to have the usual freedom of swinging movement.

My object is also to construct the fastening devices so as to take up any wear in the bearing-surfaces of the pendant and bow which may result from the constant movement of the bow. By this means the ends of the how are prevented from becoming loose upon their bearings. In carrying out my invention I provide the pendant with laterally-projecting arms or cars, upon which the ends of the bow are swiveled and form a tapered surface between these bearing-surfaces. The wear in the surfaces may be taken up by tightening the ends of the bow upon projecting arms or ears to force the tightened surfaces upon one another. The ends of the bow may be held upon the projecting arms or cars in a variety of ways, as is hereinafter more fully set forth.

In the drawings, Figure 1 is a sectional side elevation of a watch-case pendant and bow embodying my invention, and Figs. 2, 3, =1, 5, 6, 7, and 8 are similar views illustrating modifications of the invention.

A is the watch-case pendant provided upon opposite sides with laterally-projecting arms or cars B, having tapered surfaces.

0 is the bow, having its ends 0 provided with apertures adapted to fit over the arms or cars B. The inner surface of these apertures in the ends of the bow may be tapered to correspond with the tapering of the arms or cars I These arms or cars B may be tapered either inwardly or outwardlyz'. 8., the diameter may either increase or diminish from the body of the pendant. IVith the former construction the arms or cars are made separate from the pendant and are subsequently fastened thereto, and the tapering of the arms serves to fasten the ends of the bow against lateral displacement. IVith the outward taper or diminished diameter from the body of the pendant additional devices are required to fasten the bows in place.

In Fig. 1 is shown a construction in which the arms B are formed integral with the pondant and are tapered outwardly with the bow ends fastened in place by upsetting the ends of the arms.

The construction shown in Fig. 3 is similar to the construction of Fig. 1 with the armsB formed of independent ears inserted in sockets a in the pendant.

In Fig. 2 is shown a construction with the outwardly-tapering arms B and independent fastening-screws D. Fig. 7 shows a similar construction employing snapbuttons E in place of the screws D.

In Figs. 4, 5, 6, and 8 are shown constructions employing inwardly-tapered arms or ears B. In the construction of Fig. 4. these arms are screwed or otherwise fastened to the body of the pendant. In Fig. 5 they are shown connected with a ring, plate, or button F on the inside of the pendant. In the construction shown in Fig. (3 spring-ears B are employed snapped into the sockets or apertures a of the pendant, and in Fig. 8 the arms are fastened to projecting screws or pins G, carried by the body of the pendant.

To take up the wear resulting from the friction between the bearing-surfaces, the bow is forced more tightly upon the tapered surface to bring it up a portion of increased diameter.

In the constructions in which the taper is outward or decreasing from the body of the pendant, as in Figs. 1, 2, 3, and 7, this is aecomplished by tightening the fastening device, and thus forcing the ends of the bow nearer the body of the pendant.

In the constructions in which the taper is inward it is accomplished by tightening or drawing in the arms or cars.

While I prefer the minor details of con struetion that have been shown, I do not limit I my invention to them, as it is apparent that they may be modified without departing from the principles of the invention, the essential feature of which is the tapered surface between the arms or ears of the pendant and the apertures of the bow swiveled thereon.

- Having now described my invention, what I claim as new, and desire to secure by Letters Patent, is

1. In a watch-bow fastener, the combina--' tion of a pendant carrying laterally-projecting arms or ears and a bow having its ends provided with journal-holes,swive1ed upon bow may be moved-upon the'tapered surfaces of the ears to take up vwear between the parts.

3. In a WttOllrbOW fastener, the combination of a bow having its ends provided with journal -holes having internal tapered surfaces and a pendant carrying laterally-projecting arms or ears extending through the journal-holes on the ends of the bow and-having their surfaces tapered to correspond with the taperof the surfaces upon the ends of the bow, whereby the ends of the bow may be moved upon the tapered surfaces of the arms or ears to take up wear betweenthe parts.

4. In a watch-bow fastener, the combination of a pendant, a bow having its ends formed with apertures, and inwardly-tapering arms separable from the pendant, adapted to beinserted through the aperturespf the ends of the bow and attached to the pendant.

In testimony of which invention I have hereunto set my hand.

FRITZ MINK. Witnesses:

H. M. KAIN, J OSEPH M. CANFIELD. 

